DecimalAggregator.cs

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using System.ComponentModel;
 
namespace System.Xml.Xsl.Runtime;
 
[EditorBrowsable(EditorBrowsableState.Never)]
public struct DecimalAggregator
{
    private decimal _result;
 
    private int _cnt;
 
    public decimal SumResult => _result;
 
    public decimal AverageResult => _result / (decimal)_cnt;
 
    public decimal MinimumResult => _result;
 
    public decimal MaximumResult => _result;
 
    public bool IsEmpty => _cnt == 0;
 
    public void Create()
    {
        _cnt = 0;
    }
 
    public void Sum(decimal value)
    {
        if (_cnt == 0)
        {
            _result = value;
            _cnt = 1;
        }
        else
        {
            _result += value;
        }
    }
 
    public void Average(decimal value)
    {
        if (_cnt == 0)
        {
            _result = value;
        }
        else
        {
            _result += value;
        }
        _cnt++;
    }
 
    public void Minimum(decimal value)
    {
        if (_cnt == 0 || value < _result)
        {
            _result = value;
        }
        _cnt = 1;
    }
 
    public void Maximum(decimal value)
    {
        if (_cnt == 0 || value > _result)
        {
            _result = value;
        }
        _cnt = 1;
    }
}